Interpreting concurrence in terms of covariances in a generalized spin star system

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dc.creatorPalumbo, F.
dc.creatorNapoli, A.
dc.creatorMessina, A.
dc.date2006-06-20
dc.date.accessioned2026-07-07T07:19:05Z
dc.date.available2026-07-07T07:19:05Z
dc.descriptionThe quantum dynamics of M pairwise coupled spin 1/2 is analyzed and the time evolution of the entanglement get established within a prefixed couple of spins is studied. A conceptual and quantitative link between the concurrence function and measurable quantities is brought to light providing a physical interpretation for the concurrence itself as well as a way to measure it. A generalized spin star system is exactly investigated showing that the entanglement accompanying its rich dynamics is traceable back to the covariance of appropriate commuting observables of the two spins.
dc.description7 pages, 3 figures, submitted to Phys Rev B
dc.identifierhttps://arxiv.org/abs/quant-ph/0606163
dc.identifierhttp://arxiv.org/abs/quant-ph/0606163
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/114530
dc.subjectQuantum Physics
dc.titleInterpreting concurrence in terms of covariances in a generalized spin star system
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